Turbo编码DS/CDMA系统中的迭代多用户接收器  

Iterative multiuser receiver for turbo coded DS/CDMA systems

作　　者：张爱萍[1] 罗汉文[1] 王豪行[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《通信学报》2002年第10期59-65,共7页Journal on Communications

基　　金：教育部重点学科基金资助项目(A8082)

摘　　要：本文提出了一种用于Turbo编码DS/CDMA系统的迭代多用户接收器。该接收器由一个软输入/软输出(SISO)的多用户检测器和一组单用户SISO信道译码器组成。每次迭代过程中,多用户检测器和信道译码器都输出外信息作为下一次迭代的先验信息。仿真结果表明,这种接收器的比特误码性能接近Turbo编码系统的单用户限。In this paper, an iterative multiuser receiver for turbo coded DS/CDMA systems is proposed. The proposed receiver consists of a soft-in/soft-out (SISO) multiuser detector and a bank of single-user SISO channel decoders. At each iteration, extrinsic information is extracted from the multiuser detector and the channel decoders and is then used as the prior information in the next iteration. Computer simulations have shown that the proposed receiver offers bit error performance close to single-user bound of Turbo-coded systems.

关 键 词：TURBO编码 DS/CDMA 迭代多用户接收器 直接序列码分多址 多用户检测 迭代处理 

分 类 号：TN929.533[电子电信—通信与信息系统]